Example: orders.4gl (Function items_line_total)

This function computes the total amount for an order item line.

Function items_line_total (orders.4gl):

  1 PRIVATE FUNCTION items_line_total(x INTEGER) RETURNS ()
  2   LET orditems[x].line_total =
  3       orditems[x].quantity * orditems[x].price
  4 END FUNCTION

Note:

Line 1 declares the function with an integer parameter. No values are returned by the function.
Lines 2 and 3 set the value of the line_total record member in the row at index x of orditems dynamic array, by multiplying the quantity by the price of the item in this row.